Effect of glycine on the growth process of Tb3+ doped 2D ZnO nano/micro- structures: from broom shape to star-shape flower morphology
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A rational, scalable, reduction-based approach suitable for the control morphological synthesis of ZnO:3 Tb3+ at 100 °C from broom shape microstructure to star shape flower nanostructure morphology is presented here. The influence of the amino acid-glycine as both a reducing agent plus morphing agent, have on the morphology-controlled synthesis is illustrated. This report presents the crucial step for the specific control of the shape of ZnO:3 Tb3+ which was found to be tuning the amount of glycine in the growing reaction system. X-ray diffraction techniques confirmed the crystallization of hexagonal structure for all the ZnO:3 Tb3+ particles. In addition, the plausible mechanism of the architectural evolution of Tb3+ doped ZnO materials is well-ascertained. Emission process from dopant centres and surface states in host lattice, as well as their correlation, was studied. The possible luminescent mechanism is also discussed.
We acknowledged Saif-Nehu for Edax and TEM facility. One of the authors (Heikham Farida Devi) acknowledges to Ministry of Human Resource Development (MHRD), New Delhi for financial support as a fellowship.
- 10.R. Das, N. Khichar, S. Chawla, J. Mater. Sci.: Mater. Electron. 26, 7174–7182 (2015)Google Scholar